EQUIPMENT FOR CLEANING LIQUID PURIFICATION DURING WELL BORING Russian patent published in 2009 - IPC E21B21/06 

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production can be used during wells boring for cleaning liquid purification. Equipment includes primary and fine purification units, pump for liquid supply into units, tanks for sludge and liquid collection. Primary purification unit includes two pipe one inside of another. External pipe inclined in 30°. Top right part of external pipe has a nozzle with possibility of tangential solution supply to the internal pipe. Along external pipe executed inside hole covered with net, for fine dispersed liquid passing by and tank for it collection. In inside pipe of smaller diametre installed a screw auger for taking out sludge form pipes bottom end and its withdrawal into bunker. Fine purification unit include big diametre inclined at the same angle as the external primary purification pipe, installed in it at one end second pipe of a smaller diametre and smaller dimension for purified liquid withdrawal into tank, located at first pipe bottom nozzle, installed on tangential in correspondence to the second pipe fitting for solution supply. On the part of the first pipe there is a short square thread with possibility hard particles withdrawal out of overall flow to the auger.

EFFECT: cleaning liquid purification quality increase, secure equipment operation.

5 dwg